A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Large-span steel truss girder erection method
The invention relates to a large-span steel truss girder erection method. The method comprises the steps that a temporary supporting bracket is constructed on a pier close to a shore, and a slideway beam is erected; a sliding trolley is mounted on the slideway beam; an assembled steel truss girder is erected on the sliding trolley; a traction mechanism drives the steel truss girder to move towards the river surface on the slideway beam; a pontoon is erected on the river channel, and the top of a joist support on the pontoon is supported at the bottom of the steel truss girder; the traction mechanism continuously pulls the steel truss girder to move and adjusts the tightness of steel wire ropes at four corners of the pontoon, so that the steel truss girder advances along the middle line of the bridge; and after the front end of the steel truss girder reaches the position above the pier of the opposite bank of the river channel, the pontoon is injected with water and descends, so that the joist support on the pontoon is separated from the steel truss girder, and the front end of the steel truss girder falls onto the pier. The pontoon is dragged by loosening and tensioning the steel wire rope for many times, it can be guaranteed that the pontoon moves in the straight line direction of the center of the pier, the position deviation of the pontoon can be effectively prevented, and deviation of the steel truss girder is avoided.
本申请涉及大跨度钢桁梁架设方法，包括在靠近岸边的桥墩上建设临时支撑支架，架设滑道梁；在滑道梁上安装滑移车；将拼装好的钢桁梁架设在滑移车上；牵引机构带动钢桁梁在滑道梁上向河面方向移动；在河道上架设浮船，在浮船上的托梁支架的顶部支撑在钢桁梁的底部；牵引机构继续牵引钢桁梁移动，调整位于浮船四角的钢丝绳的松紧，以使钢桁梁沿桥中线前进；待钢桁梁的前端到达河道对岸的桥墩的上方位置，将浮船注水下降，从而使得浮船上的托梁支架与钢桁梁脱离，将钢桁梁的前端落入到桥墩上。通过对钢丝绳进行多次的放松、拉紧的方式队浮船进行牵引，能够保证浮船沿着桥墩中心直线方向进行移动，能够有效地防止浮船位置的偏移，避免了钢桁梁的偏移。
Large-span steel truss girder erection method
The invention relates to a large-span steel truss girder erection method. The method comprises the steps that a temporary supporting bracket is constructed on a pier close to a shore, and a slideway beam is erected; a sliding trolley is mounted on the slideway beam; an assembled steel truss girder is erected on the sliding trolley; a traction mechanism drives the steel truss girder to move towards the river surface on the slideway beam; a pontoon is erected on the river channel, and the top of a joist support on the pontoon is supported at the bottom of the steel truss girder; the traction mechanism continuously pulls the steel truss girder to move and adjusts the tightness of steel wire ropes at four corners of the pontoon, so that the steel truss girder advances along the middle line of the bridge; and after the front end of the steel truss girder reaches the position above the pier of the opposite bank of the river channel, the pontoon is injected with water and descends, so that the joist support on the pontoon is separated from the steel truss girder, and the front end of the steel truss girder falls onto the pier. The pontoon is dragged by loosening and tensioning the steel wire rope for many times, it can be guaranteed that the pontoon moves in the straight line direction of the center of the pier, the position deviation of the pontoon can be effectively prevented, and deviation of the steel truss girder is avoided.
本申请涉及大跨度钢桁梁架设方法，包括在靠近岸边的桥墩上建设临时支撑支架，架设滑道梁；在滑道梁上安装滑移车；将拼装好的钢桁梁架设在滑移车上；牵引机构带动钢桁梁在滑道梁上向河面方向移动；在河道上架设浮船，在浮船上的托梁支架的顶部支撑在钢桁梁的底部；牵引机构继续牵引钢桁梁移动，调整位于浮船四角的钢丝绳的松紧，以使钢桁梁沿桥中线前进；待钢桁梁的前端到达河道对岸的桥墩的上方位置，将浮船注水下降，从而使得浮船上的托梁支架与钢桁梁脱离，将钢桁梁的前端落入到桥墩上。通过对钢丝绳进行多次的放松、拉紧的方式队浮船进行牵引，能够保证浮船沿着桥墩中心直线方向进行移动，能够有效地防止浮船位置的偏移，避免了钢桁梁的偏移。
Large-span steel truss girder erection method
一种大跨度钢桁梁架设方法
QIAN TAO (author) / WANG XIANGXI (author) / XU BAOLI (author) / ZHAO CAIHUA (author) / HUANG WEI (author)
2021-06-25
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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